06121394 is referenced by 28 patents and cites 30 patents.

The present invention is directed to a method for polymerizing an .alpha.-olefin characterized by using a catalyst system which is obtained by reacting a halogenated metallocene compound with an organometallic compound, and then bringing the resultant reaction product into contact with a compound which will be a stable anion by reaction with the reaction product of the halogenated metallocene compound and the organometallic compound.

When the method of the present invention is carried out, a polyolefin can be obtained by the use of the inexpensive catalyst in a high activity per unit amount of the catalyst.

Title
Metallocene-catalyzed olefin polymerization in the absence of aluminoxane
Application Number
842141
Publication Number
6121394
Application Date
May 25, 1995
Publication Date
September 19, 2000
Inventor
Osamu Uchida
Osaka
JP
Katsumi Takeuchi
Osaka
JP
Tutomu Iwatani
Osaka
JP
Tadashi Asanuma
Osaka
JP
Ryuichi Sugimoto
Osaka
JP
Agent
Burns Doane Swecker & Mathis L
Assignee
Mitsui Chemicals
JP
IPC
C08F 4/44
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